in focus
Sharp and clear with no fuzziness.
Not long ago, it was difficult to produce photographs of tiny creatures with every part in focus. That’s because the lenses that are excellent at magnifying tiny subjects produce a
focus
UK /ˈfəʊ.kəs/ US /ˈfoʊ.kəs/
noun 5verb 5
Definitions
noun
1
A point at which reflected or refracted rays of light converge.
The heat of sunlight at the focus of a magnifying glass can easily set dry leaves on fire.
2
A point of a conic at which rays reflected from a curve or surface converge.
3
The fact of the convergence of light on the photographic medium.
Unfortunately, the license plate is out of focus in this image.
Not long ago, it was difficult to produce photographs of tiny creatures with every part in focus.[…]A photo processing technique called focus stacking has changed that. Developed as a tool to electronically combine the sharpest bits of multiple digital images, focus stacking is a boon to biologists seeking full focus on a micron scale.
4
The quality of the convergence of light on the photographic medium.
During this scene, the boy’s face shifts subtly from soft focus into sharp focus.
5
Concentration of attention.
I believe I can bring the high degree of focus required for this important job.
verb
1
To cause (rays of light, etc) to converge at a single point.
The difficulties of focussing colour-light signals on curved tracks to ensure maximum sighting distance were underlined in the recent official report [...] on a low-speed collision at Newcastle Central on July 25, 1960, between an unfitted freight and a diesel-hauled passenger train.
2
To adjust (a lens, an optical instrument) in order to position an image with respect to the focal plane.
You'll need to focus the microscope carefully in order to capture the full detail of this surface.
3
To adjust itself or be adjusted such that light from a scene converges appropriately to create a clear image.
I can't get the lens to focus.
The camera focuses automatically on the subject's eyes.
4
To direct attention, effort, or energy to a particular audience or task.
The president focused her remarks on the newcomers.
5
To concentrate one’s attention.
If you're going to beat your competitors, you need to focus.
Your note
not saved0 chars